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Beet pseudo-yellows virus is an authentic closterovirus
1Biology Department, Imperial College of Science, Technology and Medicine, London, UK.
Virus Genes
|January 1, 1996
Summary
Beet pseudo-yellows virus (BPYV) is confirmed as an authentic closterovirus. Sequencing reveals its diagnostic fragment is part of a heat shock protein 70 gene, similar to other closteroviruses.
Area of Science:
- Plant Virology
- Molecular Biology
- Genomics
Background:
- Beet pseudo-yellows virus (BPYV) is a plant pathogen with a wide geographical distribution.
- Previous studies utilized RT-PCR to detect BPYV, amplifying a 251 base pair fragment.
Purpose of the Study:
- To characterize the genetic nature of the BPYV-specific fragment amplified by RT-PCR.
- To confirm the taxonomic classification of BPYV within the Closteroviridae family.
Main Methods:
- Reverse Transcription Polymerase Chain Reaction (RT-PCR) for fragment amplification.
- DNA sequencing of the amplified fragment.
- Bioinformatic sequence analysis and comparison with known viral genes.
Main Results:
- The 251 base pair fragment is identified as part of a heat shock protein (HSP)70 gene.
- Sequence analysis showed high similarity to HSP70 homologue genes of other closteroviruses, including lettuce infectious yellows virus, citrus tristeza virus, and beet yellows virus.
Conclusions:
- BPYV is confirmed as an authentic member of the Closterovirus genus.
- The genetic data supports a wide geographical distribution for BPYV, consistent with its classification.